NodeJS:

• Develop a custom NodeJS web application
• Create a RESTful API using NodeJS
• Build a real-time chat application using NodeJS and Socket.IO
• Convert an existing web application to a NodeJS-based stack
• Write a custom NodeJS plugin or module

Ruby on Rails:

• Develop a custom Ruby on Rails web application
• Create a RESTful API using Ruby on Rails
• Convert an existing web application to a Ruby on Rails-based stack
• Write a custom Ruby on Rails plugin or module
• Consult on best practices for Ruby on Rails development

Java Spring Boot:

• Develop a custom Java Spring Boot web application
• Create a RESTful API using Java Spring Boot
• Convert an existing web application to a Java Spring Boot-based stack
• Write a custom Java Spring Boot plugin or module
• Consult on best practices for Java Spring Boot development